Compilare: main.cpp: In function 'void ridicareLog(int)': main.cpp:39:85: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations] matAuxAux[i][j] = matAuxAux[i][j] + (matAux[i][k] * vec[k][j]) % MODULO; ~~~~~~~~^ main.cpp:37:39: note: within this loop for (int k = 1; k <= 3; k++) ~~^~~~ main.cpp:48:31: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations] vec[i][j] = matAuxAux[i][j]; ~~~~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp:44:31: note: within this loop for (int i = 1; i <= 3; i++) ~~^~~~ main.cpp:48:26: warning: array subscript is above array bounds [-Warray-bounds] vec[i][j] = matAuxAux[i][j]; ~~~~~^ main.cpp: In function 'int main()': main.cpp:91:10: warning: array subscript is above array bounds [-Warray-bounds] vec[3][1] = 4; ~~~~~^ main.cpp:130:17: warning: array subscript is above array bounds [-Warray-bounds] out << vec[3][1] << '\n'; ~~~~~^